ICM Controls ICM330 Manuale utente

Installation, Operation &

Application Guide

For more information on our complete

range of American-made products – plus

wiring diagrams, troubleshooting tips and

more, visit us at www.icmcontrols.com

Installation of the ICM330 shall be performed by trained technicians only. Adhere to all local and

national electric codes.

Disconnect all power to the system before making any connections.

Caution!

• Line voltage:120,208,240,277,and480VAC

• Control voltage:18-30VAC

• Current:4ampsmaximum

• Frequency:50-60Hz

• Operating temperature:-40ºFto+176ºF(-40°Cto+75°C)

• Probes:

–Temperature:Thermistor,10Kohmat77°F(25°C)

–Pressure:ICM380(orderedseparately)

• Heat pump override:24VACN.C.orN.O.

• Weight:12ounces(341grams)

Note:TheICM330shouldbeappliedtomotorsandequipmentthathavebeendesignatedbytheir

respectivemanufacturersascapableofbeingspeedcontrolled.

• Mounting:

 – Surfacemountusing(2)#8screws

 – ItisrecommendedthattheICM330bemountedawayfromthecondenserexhaustairinorderto

maintainloweroperatingtemperatures

Speciﬁcations

ICM330

Head Pressure Control with

Optional Heat Pump Override

Regulates head pressure via temperature or pressure input

Connections for ICM330 at 120/208/240/277 VAC

1. Removepowerfromsystem.

2. FieldinstallawirefromLine 1wireto120/280 VACterminal.

3. CutLine 2wire;afxmotorsidetoMotor 2terminalandlinesidetoLine 2terminal.

4. Make24VAC,probeandHPconnections.

5. Verifywiringiscorrect.

6. Powerupsystemandcheckoperation.

FieldInstalledWire

1. Removepowerfromsystem.

2. FieldinstallawirefromLine 1wireto480 VACterminal.

3. CutLine 2wire;afxmotorsidetoMotor 2terminalandlinesidetoLine 2terminal.

4. Make24VAC,probeandHPconnections.

5. Verifywiringiscorrect.

6. Powerupsystemandcheckoperation.

Connections for ICM330 at 480 VAC

Field

Installed

Wire

Connections for Heat Pump System at 480 VAC

1.Removepowerfromsystem.

2.FieldinstallawirefromLine 1wireto480 VACterminal.

3.CutLine 2wire;afxthecommonfromthedefrost

board’sfanrelaytotheMotor 2terminalandtheLine

fromthecontactortotheLine 2terminal.

4.Make24VAC,probeandHPconnections.

5.Verifywiringiscorrect.

6.Powerupsystemandcheckoperation.

Connections for Heat Pump System at 120/208/240/277 VAC

1.Removepowerfromsystem.

2.FieldinstallawirefromLINE 1wireto120/280VACterminal.

3.CutLine 2wire;afxthecommonfromthedefrostboard’s

fanrelaytotheMotor 2terminalandtheLinefromthe

contactortotheLine 2terminal.

4.Make24VAC,probeandHPconnections.

5.Verifywiringiscorrect.

6.Powerupsystemandcheckoperation.

Example

1.Onlyoneprobetypecanbeusedatatime,temperatureORpressure.

2.AtypicalinstallationisshowninAppendixsection.Thetemperatureprobecan

beattachedtotheU-bend.Usetheprovidedthermo-tapetosecuretheprobe

totheplaceofattachment.

3.Whenusingapressureprobe,installitonthedischargelinetransducertting.

4.AtemperatureorpressureprobeisconnectedtoICM330asshowninthe

respectivewiringdiagrambelow.

Installing and Connecting the Probe

TemperatureProbe

BLUEWHITEGREENREDBLACK

PRESSURE TRANSDUCER

Field Installed Wire

PSC

Fan

Motor

Run

Capacitor

Fan

Relay

COM NC

Defrost Board

Field Installed Wire

PSC

Fan

Motor

Run

Capacitor

Fan

Relay

COM NC

Defrost Board

1.For non-heat pump applications,theheatpumpselectjumpermustbeintheDefault(N.O.)

position,andtheHPterminalsmustbeleftunconnected.

2.SettheCutoutSpeedandtheHardStartTimetotheappropriatepositionsforthetypeofmotoryou

have(seebelow).

Connections for Air Conditioning Only

Mode of Operations

Whenusingatemperatureprobe,thecontrolwillmaintaincondensertemperaturebetween7°Fabove

and7°FbelowdialedTemperatureSetpoint.ThedialTemperatureSetpointrangeis70°Fto140°F.

Whenusingapressureprobe,thecontrolwillmaintaincondenserpressurebetween20psigaboveand

20psigbelowdialedPressureSetpoint.ThedialPressureSetpointrangeis35psigto465psig.

Theisnocorrelationbetweendialtemperatureandpressurescalesonthecontrol.

Whenthemotorstartsrunningitwillhard startforthelengthoftimedictatedbythehard startdial

setting.Afterthehard starttimehaselapsed,themotorspeediscontrolledbytheprobereading,

temperatureorpressure.Thegreenlightturnsonwhenthemotorrunsatfullspeed.

Asthesensedtemperature/pressuredecreases,theoutputvoltagedecreases.Theyellowlightturnson

duringmotorvariablespeed.Theoutputvoltagemaydecreasetotheminimumvoltagedictatedbythe

cutout speeddial.Astemperature/pressuredecreasesfurther,theoutputvoltagegoestozerovolts.

Theyellowlightturnsoff.

Thecutoutspeeddialadjuststhemotorvoltagerange.Setthecutout

voltagedialaccordingtothetypeofmotoryouhave.

Sleeve Bearing Motors: Setthecutoutspeeddialtothemiddleof

thesleevebearingrange.Inthisrange,

themotorcanrundownapproximately40-

50%ofthefulllinevoltage,whichallows

sufcientRPMsforcoolingandlubrication.

CAUTION!:



Withsleevebearingmotors,itisimportantnotto

adjustoutsidethesleevebearingrangeorbearingfailuremayresult.

Ball Bearing Motors:SetthecutoutspeeddialtotheMINpositionintheballbearingrange.This

positionoffersthegreatestrangeofspeedcontrol.AttheMINsettingthemotor

canrundowntoapproximately20-30%ofthefulllinevoltage.

Note:Afterstartingattherecommendedsettingsforeithersleeveorballbearingmotors,youcanne

tunethecutoutspeedtoachievethedesiredresults.

Setting the Cutout Speed

DuringtheHard Startmode,fullvoltageisappliedtothemotor

duringstartuptoovercomewindmillingandtolubricatethebearings.

Thepositionofthehardstartdialdeterminesthetimeperiodofthe

hardstartmode.Thedialcanbeadjustedbetween0.2secondsand

approximately4seconds.

Setthehardstartdialaccordingtothetypeofmotoryouhave.If

youhaveaball bearing motor,setthehardstartdialtotheMIN

position.Ifyouhaveasleeve bearing motor,setthehardstartdial

tothemiddleofthesleevebearingrange.

Afteryoubeginattherecommendedsetting,youcannetunethehardstarttimewithinthe

recommendedrangeforthetypeofmotoryouhave.

Itisrecommendedthatyouusetheminimumpossiblehardstarttimetoavoidblowingtoomuchcoldair

overthecondenser.

Thehardstartmodeappliesfullvoltagetothemotorforthesettimeperiod.Afterwards,themotorspeed

isdictatedbythetemperature/pressuresensor.

Setting the Hard Start Speed

Appendix A

°C °F Resistance (KΩ)

0° 32° 32.7

5° 41° 25.4

10° 50° 19.9

15° 59° 15.7

20° 68° 12.5

25° 77° 10.0

30° 86° 8.1

35° 95° 6.5

40° 104° 5.3

45° 113° 4.4

50° 122° 3.6

Temperature vs. Probe Resistance

Appendix B

Pressure (psig) Voltage (Vdc)

0 0.5

50 0.9

100 1.3

150 1.7

200 2.1

250 2.5

300 2.9

350 3.3

400 3.7

450 4.1

500 4.5

Pressure vs. Voltage

ICM330 Typical Installation

Condenser

Sensor

ReversingValveforHeat

Pump

T-Stat

Control

Transformer

Terminaltobe

usedfor480VAC

Line1

Line2

LineVoltage Motor1

Motor2

Symptom Problem

Unitfailstostart UsinganACvoltmeter,measurethevoltagebetweenthe24VACterminals.It

shouldreadapproximately24volts.

MeasurethelinevoltagebetweenLINE1andLINE2toconrmthatline

voltageispresent.Checkwiringtothefanmotor.

Iflightsareashingalternativelythennoprobeisconnectedormalfunctioning

probe.

Whenusingatemperatureprobe,disconnectitanduseanohmmeterto

measuretheresistancebetweenthewires.Itshouldmatchthechartin

AppendixA.

Whenusingapressureprobe,withpowerappliedtothecontrolusea

voltmetertomeasurevoltsDCbetweenGNDandVout.Thereadingshould

beaccordingtothechartinAppendixB.

Thefuseisblownand/

orsignsofdamageon

theunit

Theunithasbeenmiswiredandmaybepermanentlydamaged.

Thefancyclesfrom

ONtoOFFwith

littleornospeed

modulation

Reducehard startstettingtominimumneededtoacceleratethefanmotor.

Excessivehard startcauseslargepressuredropsbyrunningtoomuchcold

airoverthecondenser.

Reducecutoutsettingtominimumneededforthemotorinuse.

Shouldthecyclingpersist,relocatethetemperatureprobeupthecondenser

toincreasesensitivitytotemperaturechangeand/oradjustthetemperature

setpoint.

Thehighpressure

switchtripsoff

See“Unitfailstostart”above

Checkthesetpointandreduceitifneeded

Troubleshooting

1.TheHeat Pumpterminalsacceptthe24VACsignalfromthereversingvalveholdingcoil.Makea

parallelconnectionfromthereversingvalvetotheHEAT PUMPterminals.

 Note:Do not apply a voltage higher than 30 VAC to the HEAT PUMP terminals.

2.IftheHeat PumpisintheHeatingmodeandthereversingvalve

isenergized,thentheHeat Pump Selectjumpermustbeinthe

Default(N.O.)position.

3.IftheHeat PumpisintheHeatingmodeandthereversingvalveisnot

energized,thentheHeat Pump SelectjumpermustbeintheN.C.position.

Connections for Heat Pump Systems

N.O.

N.C.

LIAF069-1

7313 William Barry Blvd., North Syracuse, NY 13212

(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276

www.icmcontrols.com

ONE-YEAR LIMITED WARRANTY

TheSellerwarrantsitsproductsagainstdefectsinmaterialorworkmanshipforaperiodofone(1)year

fromthedateofmanufacture.TheliabilityoftheSellerislimited,atitsoption,torepair,replaceorissue

anon-casecreditforthepurchasepricesofthegoodswhichareprovidedtobedefective.Thewarranty

andremediessetforthhereindonotapplytoanygoodsorpartsthereofwhichhavebeensubjected

tomisuseincludinganyuseorapplicationinviolationoftheSeller’sinstructions,neglect,tampering,

improperstorage,incorrectinstallationorservicingnotperformedbytheSeller.Inordertopermitthe

Sellertoproperlyadministerthewarranty,theBuyershall:1)NotifytheSellerpromptlyofanyclaim,

submittingdatecodeinformationoranyotherpertinentdataasrequestedbytheSeller.2)Permitthe

Sellertoinspectandtesttheproductclaimedtobedefective.Itemsclaimedtobedefectiveandare

determinedbySellertobenon-defectivearesubjecttoa$30.00perhourinspectionfee.Thiswarranty

constitutestheSeller’ssoleliabilityhereunderandisinlieuofanyotherwarrantyexpressed,implied

orstatutory.Unlessotherwisestatedinwriting,Sellermakesnowarrantythatthegoodsdepictedor

describedhereinaretforanyparticularpurpose.

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